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You searched for: subject:"protein synthesis"
[texts]Lewin Genes X
genes X is one of the latest edition of benjamin lewin's series of genes. useful for most of science and biologist..
Keywords: transcription; protein synthesis; genetic code
Downloads: 590
[texts]Cumulative frequency distribution of past species extinctions - Raup, D. M
Analysis of Sepkoski's compendium of the time ranges of 30,000 taxa yields a mean duration of 28.4 ma for genera of fossil invertebrates. This converts to an average extinction rate of 3.5 percent per million years or about one percent every 286,000 years. Using survivorship techniques, these estimates can be converted to the species level, yielding a Phanerozoic average of one percent species extinction every 40,000 years...
Keywords: BACTERIA; OXYGEN; PEPTIDES; BIOLOGICAL EVOLUTION; CHEMICAL EVOLUTION; MEMBRANES; MOLECULAR BIOLOGY; PHOTOSYNTHESIS; PROTEIN SYNTHESIS; PROTEINS; FLUORESCENCE
Downloads: 30
[texts]Early Archean (approximately 3.4 Ga) prokaryotic filaments from cherts of the apex basalt, Western Australia: The oldest cellularly preserved microfossils now known - Schopf, J. W
In comparison with that known from later geologic time, the Archean fossil record is miniscule: although literally hundreds of Proterozoic formations, containing more that 2800 occurrences of bona fide microfossils are now known, fewer than 30 units containing some 43 categories of putative microfossils (the vast majority of which are of questionable authenticity) have been reported from the Archean...
Keywords: AMINO ACIDS; BIOLOGICAL EVOLUTION; CHEMICAL EVOLUTION; GENETIC CODE; PROTEIN SYNTHESIS; ACYLATION; ESTERS; PEPTIDES
Downloads: 29
[texts]A Discontinuous Galerkin Finite Element Method for Hamilton-Jacobi Equations - Hu, Changqing
In this paper, we present a discontinuous Galerkin finite element method for solving the nonlinear Hamilton-Jacobi equations. This method is based on the Runge-Kutta discontinuous Galerkin finite element method for solving conservation laws. The method has the flexibility of treating complicated geometry by using arbitrary triangulation, can achieve high order accuracy with a local, compact stencil, and are suited for efficient parallel implementation...
Keywords: BACTERIA; SEA WATER; ARSENATES; METHYL COMPOUNDS; PROTEIN SYNTHESIS; ACCUMULATIONS; DEGRADATION; HEATING; FREEZING
Downloads: 142
[texts]Fine structure of the late Eocene Ir anomaly in marine sediments - Asaro, F
The Late Eocene Ir abundance profile in deep sea cores from Ocean Drilling Program Leg 113 Hole 689B on the Maude Rise off of Antarctica was studied with 410 samples continuously in 10 cm increments and measured with the Iridium Coincidence (ICS). The ICS was subsequently modified to measure 13 other elements simultaneously with the Ir. The abundance profiles of these elements were then determined in the Late Eocene Massignano section in central Italy with 250 samples (encompassing roughly 2 mil...
Keywords: AMINO ACIDS; PROTOTYPES; SEQUENCING; TABLES (DATA); BIOLOGICAL EVOLUTION; CALMODULIN; CHEMICAL EVOLUTION; MUTATIONS; PROTEIN SYNTHESIS; CALCIUM; CONGRUENCES; DOMAINS
Downloads: 19
[texts]The environmental distribution of late proterozoic organisms - Knoll, A. H
Along present day coast lines, the environmental distributions of prokaryotic and protistan populations are often sharply delimited. Realized habitat ranges are generally narrower than those circumscribed by physiological tolerances, suggesting the importance of organism-organism interactions in the determination of population distributions. Microfossil populations preserved in silicified carbonates, dolomites, and shales of the 700-800 Ma old Akademikerbreen Group, Svalbard, and elsewhere indic...
Keywords: ACYLATION; CARBON 14; GLYCINE; HYDROLYSIS; MONOMERS; AMINO ACIDS; CATALYSTS; CHEMICAL EVOLUTION; GENETIC CODE; PEPTIDES; PROTEIN SYNTHESIS; PROTEINS; RIBONUCLEIC ACIDS
Downloads: 21
[texts]On the chimerical nature of the membrane-bound ATPase from halobacterium saccharovorum - Hochstein, L. I
A series of experiments are described that were carried out with the goal of determining how the membrane-bound ATPase from H. saccharovorum is related to V- and F-type ATPases. They reflect three approaches: the use of inhibitors; structural studies; and immunological relatedness.
Keywords: BIOLOGICAL EVOLUTION; CATALYSTS; LIFE SCIENCES; MOLECULES; SOLAR SYSTEM; SUBSTRATES; DEOXYRIBONUCLEIC ACID; ENZYMES; GUANOSINES; MUTATIONS; ORGANISMS; PROTEIN SYNTHESIS; RIBONUCLEIC ACIDS; AMPLIFICATION
Downloads: 16
[texts]Experiences with optimizing airfoil shapes for maximum lift over drag - Doria, Michael L
The goal was to find airfoil shapes which maximize the ratio of lift over drag for given flow conditions. For a fixed Mach number, Reynolds number, and angle of attack, the lift and drag depend only on the airfoil shape. This then becomes a problem in optimization: find the shape which leads to a maximum value of lift over drag. The optimization was carried out using a self contained computer code for finding the minimum of a function subject to constraints...
Keywords: BIOLOGICAL EVOLUTION; REACTION KINETICS; AQUEOUS SOLUTIONS; CHEMICAL BONDS; TEMPLATES; CHEMICAL EVOLUTION; GUANOSINES; HYDROLYSIS; NUCLEOTIDES; OLIGOMERS; POLYMERIZATION; POLYNUCLEOTIDES; PROTEIN SYNTHESIS
Downloads: 129
[texts]A candidate architecture for monitoring and control in chemical transfer propulsion systems - Binder, Michael P.
To support the exploration of space, a reusable space-based rocket engine must be developed. This engine must sustain superior operability and man-rated levels of reliability over several missions with limited maintenance or inspection between flights. To meet these requirements, an expander cycle engine incorporating a highly capable control and health monitoring system is planned. Alternatives for the functional organization and the implementation architecture of the engine's monitoring and co...
Keywords: CATALYSTS; ESTERS; NUCLEAR MAGNETIC RESONANCE; PEPTIDES; RIBOSE; ELUTION; GENETIC CODE; ISOMERS; MODELS; PROTEIN SYNTHESIS; PURIFICATION; ACETIC ACID; ADENINES
Downloads: 47
[texts]Prostaglandin E2 Prevents Ovariectomy-Induced Cancellous Bone Loss in Rats - Ke, Hua Zhu
The object of this study was to determine whether prostaglandin E2, (PGE2) can prevent ovariectomy induced cancellous bone loss. Thirty-five 3-month-old female Sprague-Dawley rats were divided into two groups. The rats in the first group were ovariectomized (OVX) while the others received sham operation (sham-OVX). The OVX group was further divided into three treatment groups. The daily doses for the three groups were 0,1 and 6 mg PGE2/kg for 90 days...
Keywords: PROTEINS; FREQUENCIES; GROWTH; FEMALES; ANIMALS; RATS; PROTEIN SYNTHESIS; PITUITARY HORMONES; MUSCLES; FLEXORS; BODY WEIGHT; STIMULATION; PHYSICAL EXERCISE; LEUCINE
Downloads: 81
[texts]Photosynthetic reaction center complexes from heliobacteria - Trost, J. T.
The goal of this project is to understand the early evolutionary development of photosynthesis by examining the properties of reaction centers isolated from certain contemporary organisms that appear to contain the simplest photosynthetic reaction centers. The major focus of this project is the family of newly discovered strictly anaerobic photosynthetic organisms known as Heliobacteria. These organisms are the only known photosynthetic organisms that are grouped with the gram-positive phylum of...
Keywords: AMINO ACIDS; RIBONUCLEIC ACIDS; SIMULATION; ACYLATION; ANALOGIES; CATALYSIS; CATIONS; MAGNESIUM; STEREOCHEMISTRY; STRUCTURAL DESIGN; BIOLOGICAL EVOLUTION; CATALYTIC ACTIVITY; CHEMICAL REACTIONS; ENZYMES; GENETIC CODE; GENETICS; MOLECULAR DYNAMICS; PROTEIN SYNTHESIS
Downloads: 28
[texts]Geography of cretaceous extinctions: Data base development - Raup, D. M
Data bases built from the source literature are plagued by problems of data quality. Unless the data acquisition is done by experts, working slowly, the data base may contain so much garbage that true signals and patterns cannot be detected. On the other hand, high quality data bases develop so slowly that satisfactory statistical analysis may never be possible due to the small sample sizes. Results of a test are presented of the opposite strategy: rapid data acquisition by non-experts with mini...
Keywords: BIOLOGICAL EVOLUTION; MEMBRANES; METABOLISM; MICROPARTICLES; PEPTIDES; POLYNUCLEOTIDES; DEOXYRIBONUCLEIC ACID; GENETIC CODE; MOLECULAR BIOLOGY; PROTEIN SYNTHESIS; PROTEINS; RIBONUCLEIC ACIDS; BIOELECTRICITY; CELLS (BIOLOGY)
Downloads: 27
[movies]7.012 Introduction to Biology, Fall 2004 - MIT OpenCourseWare
The MIT Biology Department core courses, 7.012, 7.013, and 7.014, all cover the same core material, which includes the fundamental principles of biochemistry, genetics, molecular biology, and cell biology. Biological function at the molecular level is particularly emphasized and covers the structure and regulation of genes, as well as, the structure and synthesis of proteins, how these molecules are integrated into cells, and how these cells are integrated into multicellular systems and organism...
Keywords: biology, biochemistry, genetics, molecular biology, recombinant DNA, cell cycle, cell signaling, cloning, stem cells, cancer, immunology, virology, genomics, molecular medicine, DNA, RNA, proteins, replication, transcription, mRNA, translation, ribosome, nervous system, amino acids, polypeptide chain, cell biology, neurobiology, gene regulation, protein structure, protein synthesis, gene structure, PCR, polymerase chain reaction, protein localization, endoplasmic reticulum
Downloads: 99,557
[movies]Lec 21 | MIT 7.014 Introductory Biology, Spring 2005 - MIT OpenCourseWare
Topics covered: Mendelian Genetics Instructor:Prof. Graham Walker *Note: This is the correct lecture 21 for 7.014 Spring 2005. The earlier posting was a repeat of lecture 10. The MIT Biology Department core courses, 7.012, 7.013, and 7.014, all cover the same core material, which includes the fundamental principles of biochemistry, genetics, molecular biology, and cell biology. Biological function at the molecular level is particularly emphasized and covers the structure and regulation of genes,...
Keywords: micro-organisms; geochemistry; geochemical agents; biosphere; bacterial genetics; carbon metabolism; energy metabolism; productivity; biogeochemical cycles; molecular evolution; population genetics; evolution; population growth; biology; biochemistry; genetics; molecular biology; recombinant DNA; cell cycle; cell signaling; cloning; stem cells; cancer; immunology; virology; genomics; molecular medicine; DNA; RNA; proteins; replication; transcription; mRNA; translation; ribosome; nervous system; amino acids; polypeptide chain; cell biology; neurobiology; gene regulation; protein structure; protein synthesis; gene structure; PCR; polymerase chain reaction; protein localization; endoplasmic reticulum; ecology; communities
Downloads: 849
[movies]MIT 7.014 Introductory Biology, Spring 2005 - MIT OpenCourseWare
The MIT Biology Department core courses, 7.012, 7.013, and 7.014, all cover the same core material, which includes the fundamental principles of biochemistry, genetics, molecular biology, and cell biology. Biological function at the molecular level is particularly emphasized and covers the structure and regulation of genes, as well as, the structure and synthesis of proteins, how these molecules are integrated into cells, and how these cells are integrated into multicellular systems and organism...
Keywords: microorganisms, geochemistry, geochemical agents, biosphere, bacterial genetics, carbon metabolism, energy metabolism, productivity, biogeochemical cycles, molecular evolution, population genetics, evolution, population growth, biology, biochemistry, genetics, molecular biology, recombinant DNA, cell cycle, cell signaling, cloning, stem cells, cancer, immunology, virology, genomics, molecular medicine, DNA, RNA, proteins, replication, transcription, mRNA, translation, ribosome, nervous system, amino acids, polypeptide chain, cell biology, neurobiology, gene regulation, protein structure, protein synthesis, gene structure, PCR, polymerase chain reaction, protein localization, endoplasmic reticulum, ecology, communities
Downloads: 22,146
[audio]MIT7.013S05 - MIT OpenCourseWare
The MIT Biology Department core courses, 7.012, 7.013, and 7.014, all cover the same core material, which includes the fundamental principles of biochemistry, genetics, molecular biology, and cell biology. Biological function at the molecular level is particularly emphasized and covers the structure and regulation of genes, as well as, the structure and synthesis of proteins, how these molecules are integrated into cells, and how these cells are integrated into multicellular systems and organism...
Keywords: biology; biochemistry; genetics; molecular biology; recombinant DNA; cell cycle; cell signaling; cloning; stem cells; cancer; immunology; virology; genomics; molecular medicine; DNA; RNA; proteins; replication; transcription; mRNA; translation; ribosome; nervous system; amino acids; polypeptide chain; cell biology; neurobiology; gene regulation; protein structure; protein synthesis; gene structure; PCR; polymerase chain reaction; protein localization; endoplasmic reticulum; human biology; inherited diseases; developmental biology; evolution; human genetics; human diseases; infectious agents; infectious diseases
Downloads: 18,426
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